Installing an older FRITZ!OS (downgrade)

The latest FRITZ!OS provides new and improved functions and resolves known issues. We also continuously adapt and improve security functions to take current requirements into account, which protects you against new, potential threats. The latest FRITZ!OS thus ensures maximum security in your home network.

It is possible to reinstall an older FRITZ!OS (downgrade), but for these reasons we do not recommend it. However, you can use the recovery tool to install an older FRITZ!OS, which deletes all of the FRITZ!Box settings.

Requirements

Windows 10 / 8 / 7 is installed on the computer.

1 Saving data from the internal memory

This procedure deletes the internal memory. Therefore, save all of the data that you still need first:

2 Downloading the recovery tool

Switch to the folder for your FRITZ!Box model and then to the subfolder "deutschland" or "other".

Note:The complete model name of your FRITZ!Box is displayed in the FRITZ!Box user interface on the "Overview" page and on the underside of the device.

Download the file with the file extension ".exe" to the computer.

3 Connecting the FRITZ!Box with the computer

Use the network cable included with delivery to connect the computer directly to a "LAN" port on the FRITZ!Box.

Clear all other connections between your FRITZ!Box and network devices or USB devices.

4 Disabling firewalls

ATTENTION!Only disable firewalls when running the recovery tool and reenable them before establishing an internet connection. This software protects your computer from attacks from the internet and prevents other threats (for example computer viruses) from being executed.

Disconnect the FRITZ!Box from the internet and do not reconnect it until the firewall is started.

Configure all firewalls on your computer (e.g. ZoneAlarm, Norton Security) so that they are not automatically re-enabled when your computer restarts.

Close any active firewall applications.

Disable the Windows firewall:

Windows 10

Click "Start" and then "Settings" in the Windows task bar.

Click "Network and Internet" and then "Windows Firewall" in the "Settings" menu.